how to find index value of an array if there is no key in it php code example

Example 1: find element in arrat php

$userdb=Array
(
    (0) => Array
        (
            (uid) => '100',
            (name) => 'Sandra Shush',
            (url) => 'urlof100'
        ),

    (1) => Array
        (
            (uid) => '5465',
            (name) => 'Stefanie Mcmohn',
            (pic_square) => 'urlof100'
        ),

    (2) => Array
        (
            (uid) => '40489',
            (name) => 'Michael',
            (pic_square) => 'urlof40489'
        )
);

simply u can use this

$key = array_search(40489, array_column($userdb, 'uid'));

Example 2: array_search

// array demo

public $gender = array(
  1 => 'Male',
  2 => 'Female',
  3 => 'Other',
);

$gen = 1;

if ($gen == array_search('Male', $this->gender)) {
  $gender = __d('member', 'male');

} elseif ($gen  == array_search('Female', $this->gender)) {
  $gender = __d('member', 'female');

}